/*
 * Copyright 2017-2021 Dromara.org

 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.dromara.hmily.tars.parameter;

import com.qq.tars.server.core.ContextManager;
import org.dromara.hmily.core.context.HmilyContextHolder;
import org.dromara.hmily.core.context.HmilyTransactionContext;
import org.dromara.hmily.core.mediator.RpcMediator;
import org.dromara.hmily.core.mediator.RpcParameterLoader;
import org.dromara.hmily.spi.HmilySPI;

import java.util.Optional;

/**
 * The type tars parameter loader.
 *
 * @author tydhot
 */
@HmilySPI(value = "tars")
public class TarsParameterLoader implements RpcParameterLoader {

    @Override
    public HmilyTransactionContext load() {
        if (ContextManager.getContext() != null) {
            return Optional.ofNullable(RpcMediator.getInstance().acquire(ContextManager.getContext()::getAttribute)).orElse(HmilyContextHolder.get());
        }
        return HmilyContextHolder.get();
    }

}
